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Composite pillow

a pillow and pillow body technology, applied in the field of composite pillows, can solve the problems of difficult to locate parts of different materials or hardnesses at proper positions, and achieve the effect of convenient manufacturing

Inactive Publication Date: 2006-08-15
DOKUTA ERU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

"The present invention aims to provide a pillow that can prevent discomfort to users by eliminating differences in levels and depressions between parts. The invention achieves this by configuring a pillow with a central part and holding parts that are different in hardness or material, and that have parallel contact surfaces. The holding parts can be located on the right and left sides of the central part, and the contact surfaces of the holding parts and the central part can be inclined inward and outward, respectively. This results in a composite pillow that has joints that are imperceptible to the user and that can provide different functions by employing parts different in hardness or material. The central part can also be divided into a neck side part and a head top side part for added protection and comfort."

Problems solved by technology

In such a pillow, it is extremely difficult to locate parts of different materials or hardnesses at proper positions.
However, since the contact surfaces between adjacent divided parts of core material are almost perpendicular, there are drawbacks in creating discomfort due to difference in levels, resulting from different hardness between the parts, and such that a depression is formed in the divided core material when used.

Method used

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first embodiment

[0038]The composite pillow as shown in FIGS. 1–4, is divided into a central part 1, and a left holding part 2 and a right holding part 3 for holding the central part 1 by a face-to-face contact.

[0039]The central part 1 and the right and left holding parts 2, 3 are different in hardness or material. In this embodiment, urethanes of different hardnesses are employed. The hardnesses are expressed by the sinking into the pillow due to the weight of a human head. A soft urethane whose sinking ratio is 60% is employed for the central part 1 and a hard urethane whose sinking ratio is 20% is employed for the right and left holding parts 2, 3, thereby providing different hardnesses. This is just one example of a hardness combination, and other combinations are possible as a matter of course.

[0040]A urethane or polyethylene resin material, or a rubber-based natural material is suitable when the same material of different hardnesses is employed as in this embodiment.

[0041]While an integrally ...

fourth embodiment

[0053]FIG. 18A and FIG. 19A show use of a pillow of the third or fourth embodiment when lying on the back. If a head is put at the center of the pillow at with the head located on the head top side central portion 12, the neck is located on the neck side central portion 11. In this state, since the neck side central portion 11 is made of a rather hard urethane whose sinking ratio is 40% and the head top side central portion 12 is made of a soft urethane whose sinking ratio is 60%, the neck side central portion 11 supports the neck without sinking deeply, thereby preventing the cervical vertebrae from being damaged by the use of the pillow.

[0054]Also, when using the pillow while lying on the side, the position of the head is preferably maintained higher than the case when lying on the back, for cervical vertebrae protection. The composite pillow according to the third and the fourth embodiments, in which the right and left holding parts 22, 23 employ a hard urethane whose sinking rat...

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Abstract

A composite pillow which prevents difference in level and a depression from being formed at a contact surface between divided core material parts, thereby prevents discomfort to a user. The composite pillow has core parts of different material or different hardness located at proper positions. The composite pillow is divided into a central part and a holding part for holding the central part by face-to-face contact and the parts are arranged in parallel. The central part and the holding part differ in hardness or material; and right and left contact surfaces of the holding parts contacting the central part and corresponding contact surfaces of the central part are diagonally formed.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]Applicant's copending applications U.S. Ser. No. 11 / 076,037 and U.S. Ser. No. 11 / 136,603 are directed to related subject matter.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to a composite pillow configured by combining a plurality of (more properly, three or more) divided parts, and mainly to a composite pillow for improving the fit and functions of a pillow by providing a different hardness or material for each part.[0004]2. Description of the Related Art[0005]In order to improve the fit or other functions of a pillow, different materials or hardnesses are required in different sections of the pillow. Examples of an integrally formed pillow include those made of a urethane-based resin, of a natural material such as a rubber-based material, and of a liquid material, gel material or gaseous material, filled into a pillow case having a structure which can maintain the shape thereof. In such a...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): A47G9/00A47G9/10
CPCA47G9/10
Inventor FUNATOGAWA, HIROYUKI
Owner DOKUTA ERU
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